/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.flink.table.planner.runtime.utils

import org.apache.flink.api.common.typeinfo.TypeInformation
import org.apache.flink.streaming.api.datastream.DataStreamSource
import org.apache.flink.streaming.api.environment.StreamExecutionEnvironment

import scala.collection.JavaConverters._

object StreamingEnvUtil {

  /** Create a [[DataStreamSource]] from a sequence of elements. */
  def fromElements[T: TypeInformation](
      env: StreamExecutionEnvironment,
      data: T*): DataStreamSource[T] = {
    fromCollection(env, data.toSeq)
  }

  /** Create a [[DataStreamSource]] from a sequence of elements. */
  def fromCollection[T: TypeInformation](
      env: StreamExecutionEnvironment,
      data: Seq[T]): DataStreamSource[T] = {
    val typeInfo = implicitly[TypeInformation[T]]
    env.fromCollection(data.asJava, typeInfo)
  }
}
